I've been monitoring, and recording and playing back data streams recently. I happen to be using Tunerpro RT V4 uasinf S_ AUJP_V4 with an $8D mask.

I notice that most screens show smooth flowing data, like RPM , KPA, TPS voltage. My finr BLM screen does not.

While warming up, as expecpted I see my BLM's locked at 128.
After that, the line takes on more of saw tooth pattern, with near constant peaks and valleys showing up about 15BLM's apart.

Is this oscillation pattern normal, or a symptom of something else?
Does anyone else get this ragged line or is it normal?
If not what might be the cause of the oscillation?

Dave Buchholz